<template>
  <div id="app">
    <keep-alive>
       <router-view :include="cacheItems"/>
    </keep-alive>
   
  </div>
</template>
<script>
export default {
    data() {
    return {
      cacheItems: ["UserLogin"],
    };
  },

  //app.vue
  created() {
    // 在页面加载时读取sessionStorage里的状态信息
    // if (sessionStorage.getItem('store')) {
    //   this.$store.replaceState(Object.assign({}, this.$store.state, JSON.parse(sessionStorage.getItem('store'))));
    // }

    // //在页面刷新时将vuex里的信息保存到sessionStorage里
    // window.addEventListener('beforeunload', () => {
    //   sessionStorage.setItem('store', JSON.stringify(this.$store.state));
    // });
  }

}
</script>
<style lang="less">
#app {
  font-family: Avenir, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-align: center;
  color: #2c3e50;
}

nav {
  padding: 30px;

  a {
    font-weight: bold;
    color: #2c3e50;

    &.router-link-exact-active {
      color: #42b983;
    }
  }
}
</style>
